Matthew Niedzwiecki, PhD

Assistant Professor

Education
Scholars in Health Policy Research Program, 2015 - Economics, Robert Wood Johnson Foundation
Ph.D., 2013 - Economics, University of California, San Diego
M.A., 2008 - Economics, University of California, San Diego
B.A., 2007 - Mathematics, Economics, Brandeis University
Publications

  1. Cawley C, Raven MC, Martinez MX, Niedzwiecki M, Kushel MB, Kanzaria HK. Understanding the 100 highest users of health and social services in San Francisco. Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2021. PMID: 34021517


  2. Rich EC, O'Malley AS, Burkhart C, Shang L, Ghosh A, Niedzwiecki MJ. Primary Care Practices Providing a Broader Range of Services Have Lower Medicare Expenditures and Emergency Department Utilization. Journal of general internal medicine 2021. PMID: 33782897


  3. O'Malley AS, Rich EC, Shang L, Rose T, Ghosh A, Poznyak D, Peikes D, Niedzwiecki M. Practice-site-level measures of primary care comprehensiveness and their associations with patient outcomes. Health services research 2020. PMID: 33197047


  5. Raven MC, Niedzwiecki MJ, Kushel M. A randomized trial of permanent supportive housing for chronically homeless persons with high use of publicly funded services. Health services research 2020. PMID: 32976633


  6. Valdovinos EM, Niedzwiecki MJ, Guo J, Hsia RY. Effects of Medicaid expansion on access, treatment and outcomes for patients with acute myocardial infarction. PloS one 2020. PMID: 32324827


  7. Niedzwiecki MJ, Machta RM, Reschovsky JD, Furukawa MF, Rich EC. Characteristics of Academic-Affiliated Health Systems. Academic medicine : journal of the Association of American Medical Colleges 2020. PMID: 31913879


  8. Kanzaria HK, Niedzwiecki M, Cawley CL, Chapman C, Sabbagh SH, Riggs E, Chen AH, Martinez MX, Raven MC. Frequent Emergency Department Users: Focusing Solely On Medical Utilization Misses The Whole Person. Health affairs (Project Hope) 2019. PMID: 31682499


  9. Hamad R, Niedzwiecki MJ. The short-term effects of the earned income tax credit on health care expenditures among US adults. Health services research 2019. PMID: 31566732


  10. Wang RC, Niedzwiecki MJ, Nishijima D, Rodriguez RM. An impact analysis of the NEXUS Chest CT clinical decision rule. The American journal of emergency medicine 2019. PMID: 31303535


  11. Niedzwiecki MJ, Kanzaria HK, Montoy JC, Hsia RY, Raven MC. Past Frequent Emergency Department Use Predicts Mortality. Health affairs (Project Hope) 2019. PMID: 30615529


  12. Hsia RY, Huang D, Mann NC, Colwell C, Mercer MP, Dai M, Niedzwiecki MJ. A US National Study of the Association Between Income and Ambulance Response Time in Cardiac Arrest. JAMA network open 2018. PMID: 30646394


  13. Niedzwiecki MJ, Sharma PJ, Kanzaria HK, McConville S, Hsia RY. Factors Associated With Emergency Department Use by Patients With and Without Mental Health Diagnoses. JAMA network open 2018. PMID: 30646248


  14. E.M. Valdovinos, M. Niedzwiecki, J. Guo, R. Hsia. 151EMF The Medicaid Expansion and Access, Treatment, and Outcomes After Acute Myocardial Infarction. Annals of emergency medicine 2018. PMID:


  16. Samuels-Kalow ME, Niedzwiecki M, Friedman AB, Sokolove PE, Hsia RY. Comparing resource use between paediatric emergency department visits by triage level. Emergency medicine journal : EMJ 2018. PMID: 30181161


  17. Hsia RY, Sabbagh SH, Guo J, Nuckton TJ, Niedzwiecki MJ. Trends in the utilisation of emergency departments in California, 2005-2015: a retrospective analysis. BMJ open 2018. PMID: 30037870


  19. Hsia RY, Niedzwiecki M. Avoidable emergency department visits: a starting point. Volume 29 of Issue 5. 2017. PMID: 28992158


  20. Kanzaria HK, Niedzwiecki MJ, Montoy JC, Raven MC, Hsia RY. Persistent Frequent Emergency Department Use: Core Group Exhibits Extreme Levels Of Use For More Than A Decade. Volume 36 of Issue 10. Health affairs (Project Hope) 2017. PMID: 28971916


  21. Chow JL, Niedzwiecki MJ, Hsia RY. Trends in the supply of California's emergency departments and inpatient services, 2005-2014: a retrospective analysis. Volume 7 of Issue 5. BMJ open 2017. PMID: 28495813


  22. Hsia RY, Friedman AB, Niedzwiecki M. Urgent Care Needs Among Nonurgent Visits to the Emergency Department. Volume 176 of Issue 6. JAMA internal medicine 2016. PMID: 27089549


  23. Niedzwiecki M, Baicker K, Wilson M, Cutler DM, Obermeyer Z. Short-term Outcomes for Medicare Beneficiaries After Low-acuity Visits to Emergency Departments and Clinics. Volume 54 of Issue 5. Medical care 2016. PMID: 27078822